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Thermocouple compensating wire

Thermocouple compensating wire
Thermocouple compensating wire
 
Thermocouple compensating wire is used to connect the electrode (cold side of thermocouple) with display instrument in order to form a temperature measurement system. The working temperature is -25~200℃. Our plant mainly manufacture type KX,NX,EX,JX,NC,TX,SC/RC,KCA,KCB and WREC compensating wire for thermocouple, and they are used in temperature measurement instruments and cables. Our thermocouple compensating products are all made abiding by GB/T 4990-2010 ‘Alloy wires of extension and compensating cables for thermocouples’ (Chinese National Standard), and also IEC584-3 ‘Thermocouple part 3-compensating wire’ (International standard).

 

EMF of Compensating wire and the tolerance 

Thermocouple No. indexing Compensation wire type Usag Classification Measuring junction temperature / ℃ standard EMF value/μV Precision grade
General grade
Tolerance μV Thermal EMF range μV
Tolerance μV
Thermal EMF range μV
SorR
SC or RC
G
100
646
±30
616~676
±60
586~706
H

100
200

646
1 1441
-
-
-
-
±60
586~706
1.381~1 501
K
KX,KCA
or KCB
G
-25
100
-968
4 096
±40
-924~-1 012
4 052~4 140
±80
-880~-1 056
4 008~4 184
H
-25
100
200
-968
4 096
8 138
±40
-924~-1 012
4 052~4 140
8 094~8 182
±88
-880~-1 056
4 008~4 184
8 050~8 226
N
NX or NC
G
-25
100
-646
2 774
±43
-603~-689
2 731~2 817
±86
-560~-732
2 688~2 860
H
-25
100
200
-646
2 774
5 913
±43
-603~-690
2 731~2 817
5 870~5 956
±86
-560~-732
2 688~2 860
5 827~5 999
E
EX
G
-25
100
-1 432
6 319
±81
-1 351~-1 513
6 238~ 6400
±138
-1 294~-1 570
6 181~6 457
H
-25
100
200
-1 432
6 319
13 421
±81
-1 351~- 1513
6 238~6 400
13 340~13 502
±138
-1 294~-1 570
6 181~6 457
13 283~13 559
J
JX
G
-25
100
-1 239
5 269
±62
-1 177~-1 301 
5 207~5 331
±123
-1 116~-1 362
5 146~5 392
H
-25
100
200
-1 239
5 269
10 779
±62
- 177~-1 301
5 207~5 331
10 717~10 841
±123
-1 116~-1 362
5 146~5 392
10 656~10 902
T
TX
G
-25
100
-940
4 279
±30
-910~-970
4 249~4 309
±60
-850~-1 000
4 189~4 339
H
-25
100
200
-940
4 279
9 288
±48
-892~-988
4231~4 327
9 240~
±90
-850~-1 030
4 189~4 369
9 198~9 378

 

Compensating wire reciprocating resistance

Compensation wire type

Reciprocating resistance at 20℃ Ω/m (less than)

0.2m㎡

0.5 m㎡

1.0 m㎡

1.5 m㎡

2.5 m㎡

SC or RC

0.25

0.1

0.05

0.03

0.02

KCA

3.5

1.4

0.7

0.47

0.28

KCB

2.6

1.04

0.52

0.35

0.21

KX

5.5

2.2

1.1

0.73

0.44

EX

6.25

2.5

1.25

0.83

0.5

JX

3.25

1.3

0.65

0.43

0.26

TX

2.6

1.04

0.52

0.35

0.21

NC

3.75

1.5

0.75

0.5

0.3

NX

7.15

2.86

1.43

0.95

0.57

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